Suspicious package found chained to street sign in Mount Vernon

A suspicious package was found chained to a street sign in Mount Vernon Friday.

A superintendent of a building put a suitcase out with the trash. About an hour later, he noticed the suitcase chained to a street sign and police were called. Police shut down Gramatan Avenue while checking the package for a bomb.

Twenty-four apartments in two buildings were evacuated as a precaution. Investigators found nothing in the suitcase.